HomeWelcomeReviewsEditorials/PressReferenceShopping MallLinksPhoto ArchiveSearchContact
Sennebogen 690 HD Crawler Crane with Diaphragm Wall Grab

Maker:  Ros
Model No:  00202
Scale:  1:50
Review Date:  February 2012

Ros Index
Foundation Equipment Index

Cranes Etc Model Rating
Packaging   (max 10)8
Detail   (max 30)22
Features   (max 20)13
Quality   (max 25)18
Price   (max 15)11
Overall   (max 100)72%


Sennebogen 690 HD Crawler Crane with Diaphragm Wall Grab Video.
A big box.
Handrails and ladder are plastic.
Texture on the walking surfaces is extremely fine.
Counterweights are not separate.
Good detail on the track frames.
Small graphics are very good.
Chains are a bit too silver.
Brass pulleys would have been better coloured.
Plastic cab.
Grab is quite nice.
The Sennebogen 690 HD is a heavy duty cycle machine designed for repetitive stressful loadings.  It has a 90 tonne capacity and a maximum main boom length of 57.9m.

This model comes with a diaphragm wall grab used for excavating underground wall panels for basement structures.


It comes in a rather large branded box because the model is fully assembled and reeved.  Releasing the 690 HD from the packaging is a struggle as it is secured to the polystyrene trays with numerous tightly wound ties.  The review model had no defects or missing parts.

A few technical details of the real machine are included on the box and an instruction sheet with photos describes the main features of the model.


The metal tracks are good with snap-fit links which were tight enough on the review model.  They are mounted on decent track frames with no moving rollers but there are small graphics and steps.

The cab is plastic with a mirror and slightly fat grab rails.  There is plastic step plate outside and the internal detail is good.  The body has a very good paint finish with small graphics that look realistic.  Flexible plastic handrails surround the roof and the walking areas have an extremely fine textured surface.

At the rear the counterweights are detailed with sharp graphics applied.  The chains are a little too bright in terms of their silvered finish and the pulleys for the boom luffing gear are separate brass pieces. 

The boom is metal with a plastic walkway inside the top surface, and its structure is a reasonable representation but the riveted connections at the top of the boom foot do not look right.  The boom pendants are an unusual pliable plastic and they are fixed in length.

At the boom head the large pulleys look fine but the smaller brass ones would have been better painted to match the rest of the crane.

The diaphragm walling equipment is a combination of metal and plastic.  The grab is all metal while much of the frame work is plastic.  However the overall look is good with only the silver rivets and brass pulleys looking a little off.


The tracks roll reasonably and the idlers on the frames are spring loaded so removing the tracks is possible.  The track frames are also retractable, so they could be set up in a narrow transport configuration.

The crane rotates well.

To gain access to the winches the whole of one side panel is removable and this is certainly a better solution than just having holes in the bodywork.  Inside the panel there are a couple of large keys and these can be used to operate any of the three working winches.

The boom luffing winch can be used to adjust the boom angle although the boom cannot be fully raised near vertical as the boom pendants are probably over length.

There is no ability to reconfigure the boom as it is permanently riveted in the delivered configuration.  Similarly the counterweight is fixed in place and not made of individually separable parts although some pieces can be unscrewed.  However the counterweight lift cylinders can be raised and lowered a little.

The grab can be raised and lowered and opened and closed using the two main winches, and they both have a push mechanism to release the brake.  One practical difficulty is that the whole grab assembly starts spinning if it is raised off the ground. 


There is some plastic on the model and on the whole it blends in with the metal parts well.  The paintwork is very good and a good job has been done to apply a number of small graphics around the model.


The model is reasonably priced overall.


ROS has produced a model which can be taken out of the model and displayed with no assembly work.  However the compromise is that the model is not flexible as it cannot be broken down for transport loads or used in crane or other configurations.  In that sense an opportunity has been missed.  But it is good that another foundation equipment model has been made and overall it looks good with some nice detailing, and is recommended.


The model appeared in December 2011.  A version with a dragline was also produced.

Model is fully erected in the box.
Profile view.
Smart decoration.
Boom pendants are plastic.
Tracks are retractable, but the model cannot be stripped down for transport.
"Anyone seen the keys?".
Overall look is good.
Three winch drums.
Rivets are a little obvious.
Plastic walkways inside the boom.